WillAdams
(William Adams (Carbide 3D))
2
Newer versions directly support rounding the ends of rectangles:
see: https://carbide3d.com/carbidecreate/unstable/ and
https://carbide3d.com/blog/2019/carbide-create-400/
To do it with Boolean operations, see:
https://docs.carbide3d.com/assembly/carbidecreate/video-tutorials/#boolean-operations
and